What if for a moment, I transported you into the heart of Tokyo, and you discover that the city has no street names? And not just Tokyo, all of Japan is like that. And what does that have to do with the 1987 U2 song 'Where Streets Have No Names', written in a completely different context in Ireland? This week, we travel to Japan and ask a simple question - What if we pay attention to the notion of addresses and street names? What if we stop and ask, why are our addresses and street names the way they are? Tune in, and understand why Japan has no street names, and how it links to the languages we speak and write.